Bugs item #710864, was opened at 2003-03-27 17:48 Message generated for change (Comment added) made by simonpj You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=108032&aid=710864&group_id=8032
Category: Profiling Group: 5.04.2 Status: Open Resolution: None Priority: 5 Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: "entries" field is often 0 Initial Comment: On a time profiling report the "entries" field is often zero. If I want to know why "getAppropriatePreds" takes up so much time (14.7%) in my code, does the zero mean an overflowed count or that the cost centre has never been entered? I'm using 5.04.2 on Linux, and my program is compiled with -O -prof -auto-all. For example: compose InfrequentCheck 1137 12280580 2.1 2.5 2.1 2.5 align InfrequentCheck 1127 0 3.7 6.2 8.3 6.7 align2 InfrequentCheck 1139 8577943 0.4 0.0 0.4 0.0 lookupModeArgs InfrequentCheck 1136 86747940 4.2 0.4 4.2 0.4 getAppropriatePreds InfrequentCheck 1126 0 14.7 6.6 14.7 6.6 Amanda Clare (afc at aber dot ac dot uk) ---------------------------------------------------------------------- >Comment By: Simon Peyton Jones (simonpj) Date: 2003-12-16 15:29 Message: Logged In: YES user_id=50165 The code I noticed the problem with would take me days to distill to a small enough example. But I do have a small example program (about 150 lines) that I think also wrongly shows zeros in the "entries" column, so I've tarred this up and put it at http://users.aber.ac.uk/afc/zerosexample.tar.bz2 There's a readme file that shows how the program should be run. The program reads in a tree of biological data and prunes the tree to just keep the branches that are represented in the input file. The zero entry I don't understand in the profile in this case is for "maketree", which is the function argument to a fold and so should be called many times (its internals are certainly called many times). I'm also not sure why "trim" and "parseline" have zeros. Amanda ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=108032&aid=710864&group_id=8032 _______________________________________________ Glasgow-haskell-bugs mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
